Classification
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
600 - Technology
289
333 - Economics of land & energy
276
000 - Computer science, information & general works
243
620 - Engineering & allied operations
228
900 - History & geography
222
610 - Medicine & health
155
363 - Other social problems & services
146
330 - Economics
144
140 - Specific philosophical schools
111
320 - Political science
92
576 - Genetics & evolution
68
580 - Plants (Botany)
64
370 - Education
57
551 - Geology, hydrology & meteorology
54
500 - Natural sciences & mathematics
48
720 - Architecture
47
340 - Law
41
540 - Chemistry & allied sciences
41
400 - Language
35
658 - General management
35
530 - Physics
32
630 - Agriculture & related technologies
32
300 - Social sciences
28
800 - Literature & rhetoric
27
414 - Phonology & phonetics
26
304 - Factors affecting social behavior
22
100 - Philosophy & psychology
20
612 - Human physiology
18
581 - Specific topics in natural history
17
410 - Linguistics
12
301 - Sociology & anthropology
10
780 - Music
10
170 - Ethics
9
200 - Religion
9
361 - Social problems & social welfare in general
9
615 - Pharmacology & therapeutics
7
791 - Public performances
6
657 - Accounting
4
297 - Islam, Babism & Bahai Faith
3
520 - Astronomy & allied sciences
3
590 - Animals (Zoology)
2
650 - Management & auxiliary services
2
770 - Photography, photographs & computer art
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
336 - Public finance
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
more ...